128810093 has 4 divisors (see below), whose sum is σ = 128835168. Its totient is φ = 128785020.

The previous prime is 128810081. The next prime is 128810111. The reversal of 128810093 is 390018821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 390018821 = 811 ⋅480911.

It is a cyclic number.

It is not a de Polignac number, because 128810093 - 2¹⁰ = 128809069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128810993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1721 + ... + 16142.

It is an arithmetic number, because the mean of its divisors is an integer number (32208792).

Almost surely, 2^128810093 is an apocalyptic number.

It is an amenable number.

128810093 is a deficient number, since it is larger than the sum of its proper divisors (25075).

128810093 is an equidigital number, since it uses as much as digits as its factorization.

128810093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25074.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 128810093 is about 11349.4534229627. The cubic root of 128810093 is about 505.0293653479.

The spelling of 128810093 in words is "one hundred twenty-eight million, eight hundred ten thousand, ninety-three".